Adds a toggle to collapse diffs in GitHub's pull request and commit diff interfaces
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// ==UserScript==
// @name Collapsable Diffs and Linked Branches (GitHub)
// @namespace chriskim06
// @description Adds a toggle to collapse diffs in GitHub's pull request and commit diff interfaces
// @include https://github.com/*
// @require http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js
// @require https://greasyfork.org/scripts/5392-waitforkeyelements/code/WaitForKeyElements.js?version=19641
// @version 1.5.2
// @grant none
// @locale en
// ==/UserScript==
this.$ = this.jQuery = jQuery.noConflict(true);
$(function() {
waitForKeyElements('#files > div[id^="diff-"]', addDiffCollapseButtons);
waitForKeyElements('.pr-review-tools > .diffbar-item:nth-child(1)', addCollapseAllButton);
waitForKeyElements('#partial-discussion-header .commit-ref', makeLinks);
function addDiffCollapseButtons(jNode) {
// Add buttons in each header to allow folding the diff
var info = jNode.find('.file-info');
if (!info.children().first().is('a')) {
// If the button isn't there add it and add the event handler
var expanded = 'M0 5l6 6 6-6H0z';
var collapsed = 'M0 14l6-6L0 2v12z';
info.prepend(
'<a class="octicon-btn custom-collapsable" href="javascript:void(0)">' +
'<svg height="16" width="12" xmlns="http://www.w3.org/2000/svg">' +
'<path d="' + expanded + '" />' +
'</svg>' +
'</a>'
);
jNode.find('.octicon-btn.custom-collapsable').on('click', function() {
// Toggle the visibility of the diff and the direction of the arrow
var icon = $(this).find('path');
jNode.children('.data.highlight.blob-wrapper, .data.highlight.empty, .render-wrapper, .js-file-content').toggle();
icon.attr('d', (icon.attr('d') === collapsed) ? expanded : collapsed);
var collapseAllButton = $('#diff-collapse-button');
if (collapseAllButton.length) {
var state = $('#files').find('div[id^="diff-"]').children('.data.highlight.blob-wrapper').is(':visible');
collapseAllButton.attr('data-toggle-state', state ? 'expanded' : 'collapsed');
collapseAllButton.text(state ? 'Fold All' : 'Show All');
}
});
}
}
function addCollapseAllButton(jNode) {
// Add a Show/Fold All button if its not there
if (!$('#diff-collapse-button').length) {
var blobs = $('#files').find('div[id^="diff-"]').children('.data.highlight.blob-wrapper, .data.highlight.empty, .render-wrapper, .js-file-content');
jNode.after(
'<div class="diffbar-item">' +
'<button id="diff-collapse-button"' +
'class="btn btn-sm btn-outline BtnGroup-item" style="width: 75px"' +
'data-toggle-state="' + (blobs.is(':visible') ? 'expanded' : 'collapsed') + '">' +
(blobs.is(':visible') ? 'Fold All' : 'Show All') +
'</button>' +
'</div>'
);
$('#diff-collapse-button').on('click', function() {
// Toggle the visibility of all diffs, directions of arrows, and the button
var state = ($(this).attr('data-toggle-state') === 'expanded');
if (state) {
blobs.hide();
} else {
blobs.show();
}
var expanded = 'M0 5l6 6 6-6H0z';
var collapsed = 'M0 14l6-6L0 2v12z';
$('.octicon-btn.custom-collapsable').find('path').attr('d', state ? collapsed : expanded);
$(this).attr('data-toggle-state', state ? 'collapsed' : 'expanded');
$(this).text(state ? 'Show All' : 'Fold All');
});
}
}
function makeLinks(jNode) {
if (!jNode.children(':first-child').is('a')) {
// Turn the branches being compared into links if they aren't already
var url = window.location.href.match(/(https:\/\/github\.com\/)[A-Za-z0-9_-]+(\/[A-Za-z0-9_-]+)/);
if (url) {
var branch = jNode.contents().text();
if (!branch.includes(':')) {
jNode.contents().wrapAll('<a href="' + url[0] + '/tree/' + branch + '"></a>');
} else {
jNode.contents().wrapAll('<a href="' + url[1] + branch.replace(':', url[2] + '/tree/') + '"></a>');
}
}
}
}
});